256094720

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1$

素因数の和:522

約数の個数: 160

約数和(自身を含む): 725953536

約数和(自身を除く): 469858816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 248, 256, 280, 310, 320, 434, 448, 461, 496, 512, 560, 620, 640, 868, 896, 922, 992, 1085, 1120, 1240, 1280, 1736, 1792, 1844, 1984, 2170, 2240, 2305, 2480, 2560, 3227, 3472, 3584, 3688, 3968, 4340, 4480, 4610, 4960, 6454, 6944, 7376, 7936, 8680, 8960, 9220, 9920, 12908, 13888, 14291, 14752, 15872, 16135, 17360, 17920, 18440, 19840, 25816, 27776, 28582, 29504, 32270, 34720, 36880, 39680, 51632, 55552, 57164, 59008, 64540, 69440, 71455, 73760, 79360, 100037, 103264, 111104, 114328, 118016, 129080, 138880, 142910, 147520, 200074, 206528, 228656, 236032, 258160, 277760, 285820, 295040, 400148, 413056, 457312, 500185, 516320, 555520, 571640, 590080, 800296, 826112, 914624, 1000370, 1032640, 1143280, 1180160, 1600592, 1652224, 1829248, 2000740, 2065280, 2286560, 3201184, 3658496, 4001480, 4130560, 4573120, 6402368, 7316992, 8002960, 8261120, 9146240, 12804736, 16005920, 18292480, 25609472, 32011840, 36584960, 51218944, 64023680, 128047360, 256094720]

約数ペア:

[(1, 256094720), (2, 128047360), (4, 64023680), (5, 51218944), (7, 36584960), (8, 32011840), (10, 25609472), (14, 18292480), (16, 16005920), (20, 12804736), (28, 9146240), (31, 8261120), (32, 8002960), (35, 7316992), (40, 6402368), (56, 4573120), (62, 4130560), (64, 4001480), (70, 3658496), (80, 3201184), (112, 2286560), (124, 2065280), (128, 2000740), (140, 1829248), (155, 1652224), (160, 1600592), (217, 1180160), (224, 1143280), (248, 1032640), (256, 1000370), (280, 914624), (310, 826112), (320, 800296), (434, 590080), (448, 571640), (461, 555520), (496, 516320), (512, 500185), (560, 457312), (620, 413056), (640, 400148), (868, 295040), (896, 285820), (922, 277760), (992, 258160), (1085, 236032), (1120, 228656), (1240, 206528), (1280, 200074), (1736, 147520), (1792, 142910), (1844, 138880), (1984, 129080), (2170, 118016), (2240, 114328), (2305, 111104), (2480, 103264), (2560, 100037), (3227, 79360), (3472, 73760), (3584, 71455), (3688, 69440), (3968, 64540), (4340, 59008), (4480, 57164), (4610, 55552), (4960, 51632), (6454, 39680), (6944, 36880), (7376, 34720), (7936, 32270), (8680, 29504), (8960, 28582), (9220, 27776), (9920, 25816), (12908, 19840), (13888, 18440), (14291, 17920), (14752, 17360), (15872, 16135)]